Robot Pi Shop

KY-039 Heartbeat Sensor Module

$1.25
Quantity
Pickup available at Robot Pi Shop

This KY-039 Finger Detection Heart beat (Heart Rate ) Measuring Sensor Module uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse

This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse.
Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slight changed.
With a very high resistance resistor R1, because most of the light through the finger is absorbed,it is desirable phototransistor sensitive enough.Resistance can be selected by experiment to get the best results.
The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ fluctuate, so faint heartbeat will add considerable noise.


The LED is the light side of the finger, and the phototransistor on the other side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slightly changed.

Specifications:

  • Working Voltage: DC 3.3-5V
  • Size: 1.9x1.5cm
KY-039 Heartbeat Sensor Module

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  • Robot Pi Shop

    Pickup available,usually ready in 1 hour

    Ground Floor Shop, Sayde Street, Fanar Matn 1202
    Fanar
    Lebanon

    +96171791287

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